Ore-concentrator.



P. H. DARRAH. OEE GONCENTRATOR. APPLICATION FILED 00T.28, 1913.

Patented June 23,

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un mw @Wi/Www@ EL DBRAH OBE GONGBNTRATOE. APPLIOAToN HLBD 001228, 1913.

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elated H'. DARRH.

ORE GONUENTRATOB..

MPLGAToN FILED 00T.28.1913.

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l @9i/Mamma /Qp om dry ores.

and State of Californie., neve inve i NT FFCE.

` einen nen-nen, or GoonYnAns een, oeLIFonimA.v

onnconennnnetron.

To all whom t may concer/1.

{.Be it linownlthatl..PAUL lil. m citizen of the United rSintes and a resident oi Goodyears Bar, in 'the county of Sierra.

r new and Improved @re-lloncentreto 7 of which the following is a. full. clear, and act description.

This invention relates so ore eoncentrators and has particolar reference io ineens i acting mechanica-ily for separat-lon Amon the objects, therefore7 the invention 1s to provides; ninehire haring; veri# ous adjustments or capabilities oi action so conditions of ores to he trceted.

The foregoing and other objects of the invention will hereinafter he incre fully described 'and clained'and illustrated in the' drawings forming a part of this speciliczxtion in which like characters of reference View of.the..cofinections herne l indicate corresponding parte inail the rien's,

sind' in Whieh- Figure. l is a plan view of e preerred enr hodiinent of the invention; ig' is e side elevation of the sa1ne; l# ,3. s an upper end elezition; i is a longitudinal section .sribstentieliy hcrieontel the line fl-l-cf'Fig. 2, showing thelninnner lnecha- .nisnrin plan; Fig. 5 .is :L view similar to Fig. i but taken-on the line SM5 of Fig. 2; (i is :i ver'ricei longitudinal section on the line .of Fig. 5; Fig. l' is a vertical unirsi/:cree section on' the .line 7 7 of Fig. 4; Figs. 8 und s eretrensverse sectional detailsv on'thelineswb` und Q reslectively oi- Figkl, indicatingthe changing cross section between the upper and lower ends of the ore directing slats; Fig. l0 is e. detail the spring' connection on the line '1040 of Fig.

I3; Figull is :i detail of the connection with one of the hammer levers; Fig; 12 is a detailed view oi'onelof the hammers; Fig. 13 isa detail of thenean for 'secnrn the limit barsacontrolling nenctioirof t .e min-ers, ekenon theline f 13 of Fig." if; `F 14 '.f-is a fdetaiied viewsli'owing the. inerrns oivpreventing ythe tnhle from saggingdownwardly toward the discharge end of the'=1naehine ;v and Fig; is a detgiilcd- I en the heinmer meclnrnisinfund the ineens 'for vibrating the. I'Lahleflzit'rally;

The-several parte of the dei/'ice vmay he made joi any suitable. Interia-.ly sind the y strengthen the machine so es to better resist the shocks due to the late/ral vibrations or" the machine. as "to, meet thedemands of various or Arranged at the hef-idV and foot of the nsf chine are pairs of nprightsor standards 23,`

Specification of Letters Patent. Pgstented June 23, 1914. i lipplicaton le October 2S, 1913. Serial No. 797,763. A

preferably two et each end, and at thefupper end of each of these standards is an angle bracket 24 having an arm 25 extendington Ward the opposite end of the machine. An eye bolt 26 is adjustably connected by 4Ineens of a; nut 27 to said arm 25 and supports e hanger 28 for the adjiacent corner ci the table 29. These hangers serve not only as means for suspending the table 29 so es to permit lateral movements to be imparted thereto, but through the nuts 2'? and eye bolts 26 the relative elevations of the ends of the table may be varied in accordance With the Various kinds of ore or matter to he treated. The table furthermore 1s pre vented from sagging or shiftin endvvise due to the discharge thereupon o materiei by ineens of a pair of links 30 connected to e cross piece 31 at the upper end of the table end having loosev or pivotal connection et their upper ends to e cross-rod 32 supported upon a zur oi``hr'23ckets 33 extending out werdly irom the heed end of the machine.

As shown in Figs.l 1 8 and 9, the table comprises essentially a. floor /leonstructed substantially tight end arranged longitudin .nelly along the upper surfecethe'reof are tapered siate 35. Seid sletsere each constructed to provide a vertical rem' fece 35' and u beveled front fece 35". Y The taper of -corner es viewed in Fig. l., and during the of tongue and 'groove material connected vibration of the table, as described farther below, such material caused to be moved "i wardly and. toward'n the left, the larger lighter particles being causedtofpass space between the'slats to 'another il tney are delivered over the front edge .he table or at the bottom 'of Fig. 1, while the smaller and heavier particles-are conf docted along the grooves between slats and o finally discharged therefrom at the extreme nd of the table. yAt the rear edge of dangle 36 is provided to prevent the accidi'ental discharge of the material ther-cover. At 37 l show .a diagonal cleat so JJ' arranged across the lower end of the 'table "i: resulting in the bumping thereof. For the purpose of tapping the bottom of the tableI I `provide a plurality of hammers 38. These h emmers are arranged in setsJ shown as four in a set, and. each set mounted upon a rock fio shaft 39 mirnalml in bearings 40 at its ,ends

connecte to the side rails 17 of the frame. Said hammers of each set are arranged in substantially the saine plane and are caused "tmstrilre or upwardly against the bottom the table simultaneously bv means of a 41 connected to the roclt shaft 39 to the hangers are connected.A Each hammer includes a spring arm 42 hown particularly' in Fig. "12 as being secu ed at 'ne desired circumferential .adjustment to' the rock shaft 539V by meansf a set screw. A limit bar 43 extends across the machine and, connectedby means oi apair of cli s fifi to the upwardly extending portions 1 of the side rails. Saidxclips areFprovided with slotted feet `fiel as shown in g. 13 s0 as to vary the position of the limit bar 43 with respect to the hammers. In other 'is-fortis, the bar 43 is preferably' so arranged 5o as to hold the hammers normally out of enga gement with the bottom of the table so as not to. interfere with the lateral vlbratlons thcreot. The hammers, therefore, .on str1ki id bar under force will put the sprin i tension and the hammers wi.

"he the. bottom of the table but therefrom due'to the position is convenient means for g action of the hammers I connected at one end by ed 'to the lever 4l, the other .ng connected to and acted It! se red by an eye bolt upper end o'- the all is ot' consider able length so as to give a wide latitude of adjustment for the spring. l

The foregoing descrpt on of the hammer mechanism will be un erstood as being ap hammers,

plicable Vto a plurality of 4sets of yshown as six in number, extending throughout the length of the machine.

At I show a powershaft 'journaled ,transversely and substantially. midway between the ends of the machine in bearings 51 on the bars 19. On this' wer shalft are arranged tight and idle pul eys 52 through which the driving rotation ofthe wer shaft 50 is controlled from any suitab y arranged motor (not shown). I also'show n. plurality of counter shafts 53 arranged parallel to the power shaft150 and.' similarly journaled upon the beams 19, the location 4ot the shafts being preerabl substantially lbelow the respective rock s afts 39. On each of the shafts just described I mount a cam 54. These cams are so arranged and sevcured to the shafts as to act insuccession -upon the several downwardly depending le# vers 41 the countershaftsbeing driven' si multaneously and `prefrably at the samey speedlwith the power shaft 50 by an suitable form of belt or chain gearing 1n icated at 55. -Any cam, therefore, when rotated, as

indicated in Fig. 6, commg into engagement,

with the lower end of a lever 4'1 w1 put the corresponding spring 47 under tension, and as soon as the point of the cam paes `the end of the lever the power of the spring will be exerted ,to cause the set of hammers per taining to such lever to strike the bottom of roo the table, as above described. The rearward movement of the lever under the forof the spring is limited or controlled by a limit bar 43 `adjustably'secured lto the'mils 18 by clips 44 corresponding to those above described. The successive and continual tapping action of the hammers along the bottom of the table will cause the desired conccntrating action on the material.

The lat-eral 4vibrato movement of the table is effected as fo lows: At 56 is srranged. a shaftparallel' to the lon 'tudinal axis of the machine Vand journale upon n., pair of cross pieces 57 shown and supported upon the beams 17. Said shaft 56 is driven fromthe power shaft 50 through a vertical shaft 58 and suitable beveled gearing, and

connected to said shaft 56 is a cam 59 adapted tostrike or act upon an angle bracket 60 adjustably secured t rough a. slot 60' to the bottom of the table, as shown best'in Fi 7.` The extent to which the table is ,csc y 1v1 s t the table will be given one lateral swing to each two taps of'all the.. hammers. The

'lateral movement of the table, due to the drect action of the cam, 1s comparatively gradual or without shock, and such movey lower` end able rod 62 secured'lto the front rail 17 and the force of the spring causes the return of the table more or less violently, causing it to impinge against one or more stops 63 adjacent the main frame. This action is. such as to cause the larger and li hter particlesA of the mass to be pitched or t rown forwardly toward the .front edge `of the table simultaneously with the conveyance or direction of the entire mass downwardly toward the of the table by means of the slats. 1

fHaving .thus-described my invention, I claim as new and desire to secure by Letters Patent i 1. In anore concentrator; the combination ojf a frame, a table vsuspended above the frame, a. lur'ality of hammers/journaled upon the. rame below the tab1e,"lever and cam mechanism to move said hammers in one direction, a series of springs servingv to cause the hammers to move quickly in the ogposite direction to tap against the bottom o naled-transversely of the frame beneath thev table, a series of hammers connected toeach rock shaft, lever .and earn mechanism to .cause the rock shafts to carry the hammers away from the table, additional means to cause the hammersto be projected toward the table, each of the hammers including a spring arm, and means between the hammer arms and the table to cause the hammers to beb'held normally out of Contact with the ta le.

In testimony whereof I have signed my name to this'specication in the two subscribing witnesses.

PAUL IJLDARRAH.- Witnesses:

JULrUs JOHNSON,

W. J. REDDING.

presence of 

